BMW E87 E90 116i 316i N45 1.6 116HP Petrol ECU KIT DME CAS2 Key 7550688

BMW E87 E90 116i 316i N45 1.6 116HP Petrol ECU KIT DME CAS2 Key is a practical solution for workshops and users who need a proven engine electronics package for a 1.6 petrol unit. Thanks to the factory configuration for a specific type of drivetrain and the inclusion of the CAS2 module and key, the kit significantly simplifies the process of repairing or replacing the ECU in BMW 1 Series E87 and 3 Series E90 vehicles.

Specifications and technical data

• SKU: 7550688-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7550688
• Substitutable numbers: 1214756842712147550688026120903661356964051, 75684277550688, 0261209036, 6964051, 12147550688, 7550688, 12147545046, 7545046
• Fuel type: Petrol
• Category: ECUs & Computer Modules

Purpose and function of the BMW E87 E90 116i 316i N45 1.6 116HP Petrol ECU KIT DME CAS2 Key

The presented kit includes an electronic control module for a petrol engine, compatible with the 116 HP N45 unit, a CAS2 module responsible for start authorization, and a matched key. This set is particularly useful when replacing a damaged engine controller, dealing with immobilizer issues, or addressing a lack of communication between the engine electronics and the vehicle's security system. The consistency of the components in a single kit reduces the risk of software incompatibility and shortens diagnostic time.

Benefits of using an original BMW kit

Original BMW electronic control modules are designed for precise cooperation with specific engines and the vehicle's electrical system. In the case of the N45 petrol engine in 116i and 316i models, using the complete BMW E87 E90 116i 316i N45 1.6 116HP Petrol ECU KIT DME CAS2 Key allows you to:

• maintain the factory control logic for the petrol unit,
• minimize problems with immobilizer matching and key synchronization,
• reduce the need for time-consuming programming from scratch,
• maintain compatibility with the original BMW E87 and E90 electrical architecture. For workshops, this means more efficient service, and for the user – a more predictable repair outcome and stable operation of the engine control system.

Technical characteristics and compatibility

The kit has been developed for use with a petrol engine, which is crucial when selecting a controller for a specific vehicle. Electronics designed for petrol units differ in construction and software from solutions used in diesel engines, which is why correct matching based on fuel type is important for both safety and component durability. The presence of dedicated part numbers and interchangeable numbers (visible in the technical specifications) facilitates verification of compatibility with a specific BMW configuration. When selecting, it is worth comparing the markings with the original controller or using the manufacturer's catalog to ensure that the module will work with the given equipment version and vehicle model year.

Condition, verification, and practical application

The item belongs to the Electronic control modules and controllers category and is intended for reinstallation in a vehicle after prior inspection by a qualified service center. The used BMW E87 E90 116i 316i N45 1.6 116HP Petrol ECU KIT DME CAS2 Key represents a reasonable compromise between repair costs and maintaining original BMW quality, especially in the case of older 1 and 3 Series models, where full replacement with new components is sometimes economically unjustified. Before installation, it is recommended to perform vehicle computer diagnostics, check the electrical system, and – if necessary – adapt or update the software in accordance with BMW procedures. This approach allows you to fully utilize the potential of the kit and ensure stable operation of the engine control system in daily use.

Support for electronics selection and related products

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other items from the same group, such as engine controllers, comfort modules, or transmission controllers, check out the available parts in the BMW electronic control modules and controllers category. When deciding to install a used BMW E87 E90 116i 316i N45 1.6 116HP Petrol ECU KIT DME CAS2 Key, it is worth learning about the broader context of using salvaged electronics – practical tips on what to look for when choosing can be found in the article The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.